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TMP040 / TMP070 – 3-Way Mixing Panels
Installation, Operation, and Maintenance
Panel Wiring
Note: Terminal headers are removable to make wiring connections easier.
Thermostat Wiring
• 24V low voltage power may be supplied to the thermostat. Wiring of thermostat
should be done by qualified electrician and should meet local codes and
jurisdictions. Wiring to the terminal strip requires 18 gauge 4 wire.
Other Terminals
Auxiliary Contacts
The auxiliary contact set is dry, meaning no supply of power is present at the terminal. The maximum
allowable load is 1.5A. The auxiliary dry contact located on the terminal is to switch another device
(ie. the heat source) when there is a call for heat from any zone.
W R C
AUX
24 V
Signal
W R C
AUX
24 V
24 V
Signal
W R C
Signal
24 V
24 V
AUX
Jumper to Dry Contact
2-Wire Thermostat
(battery only or non-electric)
3-Wire Thermostat
(HeatLink thermostats)
4-Wire Thermostat
(with dry contact signal)
• Do not exceed 2VA per thermostat.
• Do not cross terminals C and R – this will damage the Power Box.
